EEprom.rar_STC 单片机_balloon72h_meltedkx4

#include "eeprom.h" /*-----------eeprom------------*/ //------------------------------- //Eeprom_Unlock（解锁） //Input: on //Output:on //------------------------------- void Eeprom_Unlock(void) { IAP_CONTR = ENABLE_EEPROM; //打开IAP功能，并设置等待时间 } //------------------------------- //Eeprom_Locked（上锁） //Input: on //Output:on //------------------------------- void Eeprom_Locked(void) { IAP_CONTR = 0; //关闭IAP功能 IAP_CMD = 0; //清除命令到待机状态 IAP_TRIG = 0; //清除触发寄存器 IAP_ADDRH = 0x80; //数据ptr指向非EEPROM区域 IAP_ADDRL = 0; //清除IAP地址以防止滥用 } //------------------------------- //Eeprom_Effective（配置生效） //Input: on //Output:on //------------------------------- void Eeprom_Effective(void) { IAP_TRIG = 0x46; //发送触发器命令1（0x46） IAP_TRIG = 0xb9; //发送触发器命令2（0xb9） _nop_(); //MCU将保持在此处，直到ISP / IAP / EEPROM操作完成 } //------------------------------- //EEPROM区域读取一个字节 //Input: addr 16位EEPROM地址 //Output:on //------------------------------- unsigned char EEPROM_Read_Byte(unsigned int addr) { unsigned char dat; //数据缓冲区 Eeprom_Unlock(); IAP_CMD = EEPROM_CMD_READ; //设置ISP / IAP / EEPROM READ命令 IAP_ADDRL = addr; //将ISP / IAP / EEPROM地址低8位设置 IAP_ADDRH = addr >> 8; //将ISP / IAP / EEPROM地址高8位设置 Eeprom_Effective(); //生效 dat = IAP_DATA; //读取ISP / IAP / EEPROM数据 Eeprom_Locked(); //关闭ISP / IAP / EEPROM功能 return dat; //返回Flash数据 } //------------------------------- //将一个字节编程到EEPROM区域 //Input: addr 16位EEPROM地址 // value 8位数据 //Output:on //------------------------------- void EEPROM_Write_Byte(unsigned int addr, unsigned char value) { Eeprom_Unlock(); IAP_CMD = EEPROM_CMD_PROGRAM; //设置EEPROM PROGRAM命令 IAP_ADDRL = addr; //将EEPROM地址低8位设置 IAP_ADDRH = addr >> 8; //将EEPROM地址高8位设置 IAP_DATA = value; //数据写入寄存器 Eeprom_Effective(); //生效 Eeprom_Locked(); } //------------------------------- //擦除EEPROM一个扇区 //Input: addr 16位EEPROM地址 //Output:on //------------------------------- void EEPROM_Erase_sector(unsigned int addr) { Eeprom_Unlock(); IAP_CMD = EEPROM_CMD_ERASE; //Set ISP/IAP/EEPROM ERASE command IAP_ADDRL = addr; //Set ISP/IAP/EEPROM address low IAP_ADDRH = addr >> 8; //Set ISP/IAP/EEPROM address high Eeprom_Effective(); //生效 Eeprom_Locked(); } //------------------------------- //读取指定地址数据 //Input: Sector 扇区编号 // position 扇区内相对地址 //Output:指定位置的数据 //------------------------------- unsigned char EEPROM_assign_Read(unsigned char Sector,unsigned int position){ return EEPROM_Read_Byte(EEPROM_Start_ADDRESS + Sector*Sector_size + position); } //------------------------------- //写入指定地址数据 //Input: Sector 扇区编号 // position 扇区内相对地址 // value 写入指定位置的数据 //Output:on //------------------------------- void EEPROM_assign_Write(unsigned char Sector,unsigned int position,unsigned char value){ EEPROM_Write_Byte(EEPROM_Start_ADDRESS + Sector*Sector_size + position,value); //鉴定是否需要擦除 } /*--------------------------------------------------------------------*/ //------------------------------- //写入指定地址数据 //Input: Evalue EEPROM读取的数据 // value 新的数据 //Output:0 符合，直接写入 // 1要进行数据处理 //------------------------------- bit Compared(unsigned char Evalue,unsigned char value){ unsigned char i; unsigned char date = 0; bit Ev; bit V; for(i = 0; i < 8; i++){ Ev = (Evalue & (0x01 << i)); V = (value & (0x01 << i)); if((Ev == 0)&&(V == 1))return 1; } return 0; } //------------------------------- //stc 读取指定地址数据 //Input: Sector 扇区编号 // position 扇区内相对地址 //Output:指定位置的数据 //------------------------------- unsigned char STC_EEPROM_assign_Read(unsigned char Sector,unsigned int position){ return EEPROM_assign_Read(Sector,position); } //stc 写入指定地址数据（根据STC单片机特点，对EEPROM写入进行特别的处理） void SCT_EEPROM_assign_Write(unsigned char Sector,unsigned int position,unsigned char value){ int count; if(0 == Compared(STC_EEPROM_assign_Read(Sector,position),value))EEPROM_assign_Write(Sector,position,value); //鉴定是否需要擦除 else { EEPROM_Erase_sector(EEPROM_buf_ADDRESS); //清洗EEPROM缓存区 for(count = 0; count < Sector_size;count++){ if(position == count)EEPROM_Write_Byte( EEPROM_buf_ADDRESS+position,value); //替换数据 else EEPROM_Write_Byte(EEPROM_buf_ADDRESS + count,EEPROM_assign_Read(Sector,count)); //复制数据 } EEPROM_Erase_sector(EEPROM_Start_ADDRESS + Sector*Sector_size); //擦除一个扇区（起始地址） for(count = 0; count < Sector_size;count++)EEPROM_assign_Write(Sector,count,EEPROM_Read_Byte(EEPROM_buf_ADDRESS + count)); } }